CN108756461B

CN108756461B - Power-assisted door handle assembly and refrigeration equipment

Info

Publication number: CN108756461B
Application number: CN201810572495.3A
Authority: CN
Inventors: 李建新; 潘自杰; 盛遵丰; 赵旭日; 杨洪光
Original assignee: Qingdao Haier Special Refrigerator Co Ltd; Haier Smart Home Co Ltd
Current assignee: Qingdao Haier Special Refrigerator Co Ltd; Haier Smart Home Co Ltd
Priority date: 2018-06-06
Filing date: 2018-06-06
Publication date: 2022-05-20
Anticipated expiration: 2038-06-06
Also published as: CN108756461A

Abstract

The invention discloses a power-assisted door handle assembly and refrigeration equipment, comprising a bracket, a handle, a push rod and a return spring arranged on the bracket. Both ends of the handle are respectively provided with cams. The push rod is a four-section structure. When the handle is in an unopened state, the end point of the short half shaft of the cam is closer to the fourth push rod segment than the end point of the long half shaft. When the handle is pulled, the circumferential end face of the cam abuts against the end of the fourth push rod segment. As the handle continues to be pulled, the short semi-axis end point of the cam gradually moves away from the fourth push rod segment, and the long semi-axis end point gradually approaches the fourth push rod segment. The push rod section pushes the fourth push rod section and the entire push rod to move in the direction close to the box body, and at the same time the return spring shrinks; continue to pull the handle until the end of the first push rod section abuts against the box body, by acting on the The force on the box body overcomes the pressure difference between the inside and outside of the storage room of the refrigeration equipment, so that the door can be easily opened. After the handle is released, the return spring resets, driving the assist handle assembly to reset.

Description

Power-assisted door handle assembly and refrigeration equipment

Technical Field

The invention relates to the technical field of door handles of refrigeration equipment, in particular to a power-assisted door handle assembly and the refrigeration equipment.

Background

The door body and the box body of the refrigeration equipment such as a refrigerator or a vertical refrigerator are generally sealed by a magnetic sealing strip, so that cold air in a storage chamber is prevented from leaking, and the refrigeration effect is ensured. However, when the door body is opened, the door body is opened difficultly due to the combined action of negative pressure and magnetic force because of the pressure difference between the inside and the outside of the storage chamber. The existing handles with the power assisting structures are complex in general structures.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: the invention provides a power-assisted door handle assembly and refrigeration equipment, which are simple in structure, easy to realize and convenient for opening a door body.

The technical scheme provided by the invention is that the power-assisted door handle assembly and the refrigeration equipment comprise a bracket, a handle, a push rod and a return spring; the handle is rotatably connected with the bracket, and two ends of the handle are respectively provided with a cam; the support is provided with a pin shaft A, and the push rod is sleeved on the pin shaft A and reciprocates along the pin shaft A; the return spring is used for applying a return force to the power-assisted door handle assembly; the handle, the push rod and the return spring are configured such that: when the handle is pulled, the circumferential side end surface of the cam abuts against one end of the push rod, the push rod is pushed to move towards the direction close to the box body of the refrigeration equipment along the pin shaft A until the push rod abuts against the box body, and the return spring contracts; when the handle is released, the return spring is reset to drive the power-assisted door handle assembly to reset.

Further, the cam is a disc cam, and when the handle is in an unopened state, the end point of the minor half shaft of the disc cam is close to the end of the push rod compared with the end point of the major half shaft; when the handle is in an open state, the end point of the longer half shaft of the disc cam is closer to the end of the push rod than the end point of the shorter half shaft.

Further, the push rod comprises a first push rod section, a second push rod section, a third push rod section and a fourth push rod section which are sequentially connected, the third push rod section is vertically arranged between the first push rod section and the second push rod section, and the fourth push rod section is vertically arranged at the end part of the second push rod section and is positioned at the same side with the third push rod section; a through hole A is formed in the third push rod section, and the pin shaft A is inserted into the through hole A; when the handle is pulled, the end point of the long half shaft is gradually far away from the fourth push rod section, the end point of the short half shaft is gradually close to the fourth push rod section, and the end part of the first push rod section is abutted to the box body.

Furthermore, the support is provided with a first limiting part for limiting the first push rod section and a second limiting part for limiting the second push rod section.

Furthermore, the first limiting part is a concave part arranged on the side wall of the bracket, and the first push rod section is clamped in the concave part and reciprocates along the concave part; the second limiting part is a baffle arranged on a bottom plate of the support, and the second push rod section is clamped between the baffle and the side wall of the support and reciprocates along the baffle.

Furthermore, through holes B are formed in two ends of the handle respectively, pin shafts B are correspondingly arranged on the side walls of the support respectively, and the pin shafts B are inserted into the through holes B.

Furthermore, the reset spring is sleeved on the pin shaft A and is positioned between the third push rod section and the side wall of the support.

Further, a cushion pad is arranged at the free end of the first push rod segment.

Further, the length of minor axis is 3mm, the length of major axis is 12 mm.

The invention also provides a refrigerating device which comprises a box body and a door body hinged with the box body, wherein the side end face of the door body is provided with the booster door handle assembly.

Compared with the prior art, the invention has the advantages and positive effects that:

the invention provides a power-assisted door handle assembly and refrigeration equipment. The two ends of the handle are respectively provided with a cam. The push rod is of a four-section structure and comprises a first push rod section, a second push rod section, a third push rod section and a fourth push rod section. The third push rod section is in sliding fit with a pin shaft A arranged on the support. When the handle is in the unopened state, the minor half-axis end point of the cam is closer to the fourth push rod section than the major half-axis end point. When the handle is pulled, the circumferential side end face of the cam abuts against the end part of the fourth push rod section, along with the continuous pulling of the handle, the short half shaft end point of the cam is gradually far away from the fourth push rod section, the long half shaft end point is gradually close to the fourth push rod section, the fourth push rod section is pushed to move towards the direction close to the box body, so that the first push rod section is driven to move towards the direction close to the box body, and meanwhile, the reset spring is contracted; and continuously keeping the pulling handle until the end part of the first push rod section is abutted against the box body, overcoming the internal and external pressure difference of the storage chamber of the refrigeration equipment through the acting force acting on the box body, and realizing the easy opening of the door body. After the handle is loosened, the return spring is reset to drive the power-assisted handle assembly to reset. The force transmission is realized through the action of the cam and the fourth push rod section, and the structure is simple and easy to realize.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic view of an assembly structure of a door handle assembly according to an embodiment of the present invention;

FIG. 2 is an assembled structural schematic view of a door handle assembly according to an embodiment of the present invention;

FIG. 3 is a view taken along line C-C of FIG. 2;

FIG. 4 is a schematic view of the cam shown at D in FIG. 3;

FIG. 5 is a schematic view of a door handle assembly with a handle removed according to an embodiment of the present invention;

FIG. 6 is an enlarged view of a portion E of FIG. 5;

FIG. 7 is a schematic structural diagram of a putter in accordance with an embodiment of the present invention;

FIG. 8 is a schematic structural view of a stent according to an embodiment of the present invention;

FIG. 9 is a schematic structural view of a bracket according to another aspect of the present invention;

FIG. 10 is a schematic view of a door handle assembly mounted to a refrigeration appliance in accordance with an embodiment of the present invention;

fig. 11 is a partial enlarged view of fig. 10 at F.

The novel door comprises a handle 100, a holding part 110, a rotating part 120, a push rod 200, a first push rod section 210, a second push rod section 220, a third push rod section 230, a through hole A231, a through hole A240, a fourth push rod section 300, a support 310, a first side wall 320, a second side wall 330, a third side wall 340, a fourth side wall 341, an opening 341, a recess 342, a through hole A', a baffle 343, a pin shaft A360, a pin shaft B370, a return spring 400, a box 500, a door body 600, an embedded box 610 and a cam 700.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

First, a brief description will be made of technical terms involved in the detailed description: the following references to the front or rear of each structure are defined in terms of the position of the structure relative to the user in normal use; when the arrangement positions of the plurality of structural members are described in the front or the rear, the arrangement positions of the device composed of the plurality of structural members relative to the user in the normal use state are also defined.

The invention discloses a power-assisted door handle assembly which is applied to refrigeration equipment such as a refrigerator and a vertical refrigerator.

Referring to fig. 1 to 6, the door handle assembly includes a bracket 300, a handle 100 disposed on the bracket 300, a push rod 200, and a return spring 400.

The bracket 300 has a strip-shaped groove structure, and referring to fig. 8 and fig. 9, the bracket 300 includes a first sidewall 310 and a second sidewall 320 oppositely disposed at two ends of the bracket 300, and a third sidewall 330 and a fourth sidewall 340 oppositely disposed along a length direction of the bracket 300. The middle portion of the fourth sidewall 340 is provided with a strip-shaped opening 341, and when the handle 100 is installed in place, a clearance space is formed between the opening 341 and the handle 100, so that a user can conveniently pull the handle 100 by inserting his hand into the opening 341.

Both ends of the handle 100 are rotatably connected to the first and

second sidewalls

310 and 320 of the bracket 300, respectively, to facilitate pulling the handle 100. A through hole a '343 is formed in the fourth side wall 340, a pin shaft a 360 is fixedly disposed on the through hole a' 343, and the push rod 200 is sleeved on the pin shaft a 360 and reciprocates along the pin shaft a 360. The pin A360 also serves as a limiting guide for the push rod 200. Return spring 400 is used to apply a return force to the assist door handle assembly. When the handle 100 is pulled, one side of the handle 100 abuts against one end of the push rod 200, the push rod 200 is pushed to move towards the direction close to the box 500 of the refrigeration equipment along the pin shaft A360 to abut against the box 500, and the return spring 400 contracts. The acting force acting on the box body 500 is utilized to overcome the internal and external pressure difference of the storage chamber of the refrigeration equipment, and the door body 600 is easily opened. When the handle 100 is released, the return spring 400 is reset, which drives the door handle assembly to reset.

The handle 100 includes a grip portion 110 and a rotation portion 120 connected to the grip portion 110. Through holes B (not shown) are respectively formed at two ends of the rotating portion 120, and pin shafts B370 are correspondingly arranged on the first side wall 310 and the second side wall 320, respectively, and the pin shafts B370 are inserted into the through holes B, so that the handle 100 is rotatably connected with respect to the bracket 300. After the handle 100 is installed in place, the side edge of the holding portion 110 is close to the fourth sidewall 340, and forms a gap space with the opening 341, so that a user can conveniently operate the holding portion 110 by inserting his hand into the opening 341. The side surface of the rotating part 120 is close to the third sidewall 330, and the cross-sectional shape of the rotating part 120 is preferably arc-shaped in order to avoid interference of the rotating part 120 with the third sidewall 330 during rotation, see fig. 3. In addition, the grip portion 110 of the present embodiment also functions as a decorative cover, and can shield the push rod 200, the return spring 400, and other components in the holder 300. Of course, in other embodiments, a decorative cover (not shown) may be separately provided on the bracket 300 under the grip 110.

Cam mounting portions (not shown) for mounting the cam 700 are respectively provided on both sides of the rotating portion 120, and when the cam 700 is fixedly mounted in place, a minor axis of the cam 700 is perpendicular to a longitudinal direction of the rotating portion 120. Referring to fig. 4, the center of the cam 700 is set to O, the end point of the semi-minor axis is set to a, and the end point of the semi-major axis is set to B. Preferably, in order to improve the force transmission efficiency, the length of the minor axis is set to 3mm and the length of the major axis is set to 12 mm.

In this embodiment, the push rod 200 adopts a four-segment structural design, and referring to the structural schematic diagram of the push rod 200 shown in fig. 7, the push rod 200 includes a first push rod segment 210, a second push rod segment 220, a third push rod segment 230 and a fourth push rod segment, the third push rod segment 230 is vertically disposed between the first push rod segment 210 and the second push rod segment 220, and the fourth push rod segment 240 is vertically disposed at an end of the second push rod segment 220 and is located at the same side as the third push rod segment 230. A through hole a 231 is formed in the third push rod section 230, and the pin shaft a 360 is inserted into the through hole a 231, so that the push rod 200 is slidably connected with the pin shaft a 360. When the push rod 200 is in place, the end of the first push rod segment 210 is adjacent to the casing 500 and the fourth push rod segment 240 is adjacent to the cam 700. When the holding portion 110 is pulled, the holding portion 110 drives the rotating portion 120 to rotate relative to the bracket 300, and the circumferential side surface of the cam 700 abuts against the fourth push rod segment 240 under the driving of the rotating portion 120. Continuing to pull the holding part 110, as the rotating part 120 rotates, the minor axis end point a of the cam 700 gradually gets away from the fourth push rod segment 240, and the major axis end point B gradually gets close to the fourth push rod segment 240, pushing the fourth push rod segment 240 to move towards the direction close to the box body 500, thereby achieving that the end of the first push rod segment 210 gets close to the box body 500; the grip 110 continues to be pulled until the end of the first pusher segment 210 abuts the housing 500.

Preferably, to avoid wasting force, the stub axle end point a is placed against the fourth pusher segment 240 when the power door handle assembly is in the initial state. In this way, as long as the handle 100 is pulled forcefully, the cam 700 can push the fourth push rod segment 240 to move, so as to drive the whole push rod 200 to move towards the direction close to the box body 500, thereby increasing the response speed of the power door handle assembly.

In order to realize that the push rod 200 is more stable and smooth in the reciprocating process, a first limiting part for limiting the first push rod section 210 and a second limiting part for limiting the second push rod section 220 are arranged on the bracket 300. This embodiment is from the angle of being convenient for processing and installation, and the setting of first spacing portion and the spacing portion of second is respectively:

the first limiting portion is a concave portion 342 disposed on an upper end surface of the fourth side wall 340, and the first push rod segment 210 is clamped in the concave portion 342 and reciprocates along the concave portion 342. The second limiting part is a baffle 350 disposed on the bottom plate of the bracket 300, and a limiting space for limiting the second push rod segment 220 is formed between the baffle 350 and the adjacent first side wall 310 and second side wall 320. The second push rod segment 220 is caught in the space and reciprocates along the length direction of the baffle 350.

In order to avoid interference of the shutter 350 with the movement of the rotating part 120, a distance L is provided between the shutter 350 and the third side wall 340, and refer to fig. 8. Assuming that the maximum horizontal movement distance of the rotating part 120 is H when the first push rod section 210 abuts against the box body 500 and the door body 600 is opened, the value of L is set to ensure that L is greater than or equal to H.

The return spring 400 of this embodiment is sleeved on the pin shaft a 360 and located between the third push rod section 230 and the fourth side wall 340, and one end of the return spring is connected to the third push rod section 230 and the other end is connected to the fourth side wall 340. When the handle 100 is pulled, the return spring 400 is forced to contract along with the sliding of the third push rod segment 230 along the pin axis a 360; when the handle 100 is released, the return spring 400 is reset, and drives the third push rod segment 230 to move in a direction away from the box body 500, so as to reset the assisted door handle assembly.

To avoid wear of the ram 200 during its reciprocal abutment with the casing 500, a cushion (not shown) is provided at the free end of the first ram segment 210.

The invention also discloses a refrigeration device, which comprises a refrigerator, a vertical refrigerator and the like, and comprises a box body 500 and a door body 600 hinged with the box body 500. Referring to fig. 10 and 11, a pre-buried box 610 is disposed on a side end surface of the door body 600, and the pre-buried box 610 is integrally formed with the door body 600 by foaming for mounting the door handle assembly of the present embodiment. In actual installation, the handle 100, the cam 700, the push rod 200, the return spring 400 and other components are installed on the bracket 300, and then the bracket 300 is integrally installed in the embedded box 610. After the installation is finished, only the holding part 110 operated by a user is exposed and does not protrude out of the door body 600, so that an embedded handle is formed, the door body 600 can be conveniently opened, and meanwhile, the problems of unattractive appearance, easy abrasion and the like caused by the exposed handle can be avoided.

When the grip portion 110 is pulled, the grip portion 110 drives the rotating portion 120 to rotate relative to the bracket 300, and the circumferential side end surface of the cam 700 abuts against the fourth push rod section 240 by the driving of the rotating portion 120. Continuing to pull the holding part 110, as the rotating part 120 rotates, the minor axis end point a of the cam 700 gradually gets away from the fourth push rod segment 240, and the major axis end point B gradually gets close to the fourth push rod segment 240, pushing the fourth push rod segment 240 to move towards the direction close to the box body 500, thereby achieving that the end of the first push rod segment 210 gets close to the box body 500; the grip 110 is pulled on until the end of the first pusher section 210 abuts the housing 500. The holding part 110 is continuously pulled, the acting force of the first push rod section 210 on the box body 500 is continuously increased, the difference between the internal pressure and the external pressure of the storage chamber is overcome, and the door body 600 is easily opened. After the holding part 110 is released, the return spring 400 is reset to drive the power-assisted door handle assembly to reset.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. An assist door handle assembly, comprising a bracket, characterized in that it also includes a handle, a push rod and a return spring; the handle is rotatably connected to the bracket, and both ends of the handle are respectively provided with cams; the bracket A pin shaft A is provided on it, and the push rod is sleeved on the pin shaft A and reciprocates along the pin shaft A; the reset spring is used to apply a reset force to the power door handle assembly;

The push rod includes a first push rod section, a second push rod section, a third push rod section and a fourth push rod section that are connected in sequence, and the third push rod section is vertically arranged between the first push rod section and the fourth push rod section. Between the second push rod sections, the fourth push rod section is vertically arranged at the end of the second push rod section, and is on the same side as the third push rod section, the third push rod section The segment is provided with a through hole A, and the pin A is inserted into the through hole A;

the return spring is sleeved on the pin A, and is located between the third push rod segment and the side wall of the bracket;

The handle includes a grip portion and a rotating portion connected with the grip portion, the cam is arranged on the rotating portion, and the grip portion can shield the push rod and the return spring;

The handle, the push rod and the return spring are configured such that when the handle is pulled, the circumferential side surface of the cam abuts one end of the push rod, pushing the push rod along the pin shaft A moves toward the box body of the refrigerating equipment until it abuts against the box body, and the return spring contracts; when the handle is released, the return spring returns to drive the power door handle assembly to return.

2 . The assist door handle assembly according to claim 1 , wherein the cam is a disc-shaped cam, and when the handle is in an unopened state, the end point of the short half shaft of the disc-shaped cam is compared with The end point of the long semi-axis is close to the end of the push rod; when the handle is in the open state, the end point of the long semi-axis of the disc cam is closer to the end of the push rod than the end point of the short semi-axis .

3 . The assist door handle assembly of claim 2 , wherein when the handle is pulled, the end point of the long semi-axis gradually moves away from the fourth push rod segment, and the end point of the short semi-axis gradually moves away from the fourth push rod segment. 4 . Close to the fourth push rod segment, the end of the first push rod segment abuts against the box body.

4 . The assist door handle assembly according to claim 3 , wherein the bracket is provided with a first limiting portion for limiting the first push rod segment and a first limiting portion for limiting the second push rod segment. 5 . The second limiting part for limiting.

5 . The assist door handle assembly according to claim 4 , wherein the first limiting portion is a concave portion provided on the side wall of the bracket, and the first push rod segment is clamped on the side wall of the bracket. 6 . Reciprocating movement in and along the concave portion; the second limiting portion is a baffle plate arranged on the bottom plate of the bracket, and the second push rod segment is clamped between the baffle plate and the bracket. Reciprocating movement between the side walls and along the baffle.

6 . The assist door handle assembly according to claim 1 , wherein the two ends of the handle are respectively provided with through holes B, and the side walls of the bracket are respectively provided with pins correspondingly. 7 . The shaft B, the pin shaft B is inserted in the through hole B.

7 . The power-assisted door handle assembly according to claim 1 , wherein the free end of the first push rod segment is provided with a buffer pad. 8 .

8 . The assist door handle assembly according to claim 2 , wherein the length of the short half shaft is 3 mm, and the length of the long half shaft is 12 mm. 9 .

9 . A refrigeration equipment, comprising a box body and a door body hinged with the box body, wherein the side end surface of the door body is provided with the power-assisted door handle assembly according to any one of claims 1-8 .